:root {
  color-scheme: dark;
  --bg: #06101b;
  --bg-deep: #030a12;
  --surface: rgba(13, 30, 45, 0.74);
  --surface-solid: #0c1c2a;
  --surface-raised: #102638;
  --line: rgba(133, 179, 199, 0.18);
  --line-strong: rgba(78, 230, 193, 0.35);
  --text: #edf8f7;
  --muted: #8fa9b4;
  --accent: #4ee6c1;
  --accent-2: #51a8ff;
  --accent-soft: rgba(78, 230, 193, 0.11);
  --brand: #2f7cf4;
  --brand-soft: rgba(47, 124, 244, 0.14);
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.32);
  --header: rgba(6, 16, 27, 0.78);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f0f7f7;
  --bg-deep: #e6f0f1;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-solid: #ffffff;
  --surface-raised: #f8ffff;
  --line: rgba(19, 72, 82, 0.14);
  --line-strong: rgba(0, 145, 116, 0.28);
  --text: #0b2630;
  --muted: #58717a;
  --accent: #008d70;
  --accent-2: #126cb6;
  --accent-soft: rgba(0, 141, 112, 0.1);
  --brand: #155fd4;
  --brand-soft: rgba(21, 95, 212, 0.1);
  --shadow: 0 28px 80px rgba(31, 77, 84, 0.14);
  --header: rgba(240, 247, 247, 0.82);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 72% 12%, rgba(55, 151, 159, 0.14), transparent 30rem),
    linear-gradient(180deg, var(--bg-deep), var(--bg) 24rem);
  color: var(--text);
  font-family: Inter, "Segoe UI", Tahoma, Arial, sans-serif;
  line-height: 1.6;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.18;
  content: "";
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  color: inherit;
  font: inherit;
}

[hidden] {
  display: none !important;
}

.noise {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.9'/%3E%3C/svg%3E");
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  padding: 0 4vw;
  border-bottom: 1px solid var(--line);
  background: var(--header);
  backdrop-filter: blur(20px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  box-shadow: inset 0 0 18px var(--brand-soft);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-mark svg {
  width: 28px;
  fill: none;
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.2;
}

.brand-copy {
  display: grid;
  line-height: 1.1;
}

.brand-copy strong {
  letter-spacing: 0.03em;
}

.brand-copy small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
}

.desktop-nav a,
.mobile-menu a {
  position: relative;
  color: var(--muted);
  font-size: 0.83rem;
  font-weight: 650;
  transition: color 180ms ease;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: -28px;
  left: 0;
  height: 2px;
  background: var(--accent);
  content: "";
  opacity: 0;
  transform: scaleX(0.4);
  transition: 180ms ease;
}

.desktop-nav a:hover,
.desktop-nav a.active,
.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--text);
}

.desktop-nav a.active::after {
  opacity: 1;
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-button,
.language-button,
.auth-button,
.menu-button {
  display: grid;
  min-width: 39px;
  height: 39px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  cursor: pointer;
}

.auth-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  width: auto;
  padding: 0 12px;
  border-color: rgba(47, 124, 244, 0.32);
  color: var(--brand);
  font-size: 0.72rem;
  font-weight: 800;
  white-space: nowrap;
}

.auth-button .icon {
  width: 17px;
}

.icon-button .icon {
  width: 19px;
}

.language-button {
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
}

.menu-button {
  display: none;
  gap: 4px;
  padding: 10px;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text);
}

.mobile-menu {
  position: fixed;
  top: 78px;
  right: 0;
  left: 0;
  z-index: 45;
  padding: 20px 4vw;
  border-bottom: 1px solid var(--line);
  background: var(--surface-solid);
  box-shadow: var(--shadow);
}

.mobile-menu nav {
  display: grid;
  gap: 6px;
}

.mobile-menu a {
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
}

.section {
  width: min(1180px, 92vw);
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - 78px);
  padding: clamp(72px, 10vh, 128px) 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: 8vw;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 22px;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow > span {
  width: 26px;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.16;
}

h1 {
  max-width: 850px;
  margin-bottom: 26px;
  font-size: clamp(3rem, 6vw, 6.4rem);
  letter-spacing: -0.055em;
}

h1 em {
  color: var(--accent);
  font-style: normal;
  text-shadow: 0 0 28px var(--accent-soft);
}

h2 {
  margin-bottom: 15px;
  font-size: clamp(1.75rem, 3vw, 3rem);
  letter-spacing: -0.035em;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.08rem;
}

.lead {
  max-width: 700px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: clamp(1rem, 1.6vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 12px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 11px;
  font-size: 0.84rem;
  font-weight: 800;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  color: #03231c;
  box-shadow: 0 12px 30px var(--accent-soft);
}

.button-ghost {
  border-color: var(--line);
  background: var(--surface);
}

.button-ghost:hover {
  border-color: var(--line-strong);
}

.button-icon {
  width: 17px;
}

[dir="rtl"] .button > .button-icon:last-child {
  transform: scaleX(-1);
}

.icon {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.hero-stats {
  display: flex;
  gap: clamp(22px, 4vw, 50px);
  margin-top: 58px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.hero-stats div {
  display: grid;
}

.hero-stats strong {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 1.6rem;
}

.hero-stats span {
  color: var(--muted);
  font-size: 0.73rem;
}

.hero-visual {
  position: relative;
  display: grid;
  min-height: 520px;
  place-items: center;
  perspective: 900px;
}

.hero-visual::before {
  position: absolute;
  width: 75%;
  height: 75%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(78, 230, 193, 0.16), transparent 67%);
  content: "";
  filter: blur(4px);
}

.orbit {
  position: absolute;
  width: 380px;
  height: 380px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transform: rotateX(66deg) rotateZ(28deg);
}

.orbit::after {
  position: absolute;
  top: 45%;
  left: -5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 16px var(--accent);
  content: "";
}

.orbit-two {
  width: 290px;
  height: 290px;
  border-color: rgba(81, 168, 255, 0.28);
  transform: rotateX(70deg) rotateZ(-42deg);
}

.cyber-core {
  position: relative;
  z-index: 2;
  width: 215px;
  height: 235px;
  transform: rotateY(-10deg) rotateX(4deg);
  transform-style: preserve-3d;
}

.core-face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  clip-path: polygon(50% 0, 92% 18%, 84% 73%, 50% 100%, 16% 73%, 8% 18%);
  background:
    linear-gradient(145deg, rgba(78, 230, 193, 0.2), rgba(7, 30, 42, 0.8)),
    var(--surface-solid);
  box-shadow:
    inset 0 0 45px rgba(78, 230, 193, 0.1),
    25px 25px 60px rgba(0, 0, 0, 0.25);
}

.core-face::after {
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(78, 230, 193, 0.28);
  clip-path: inherit;
  content: "";
}

.core-face .icon {
  width: 105px;
  color: var(--accent);
  filter: drop-shadow(0 0 12px var(--accent));
  stroke-width: 1.3;
}

.core-glow {
  position: absolute;
  inset: 30%;
  background: var(--accent);
  filter: blur(55px);
}

.floating-chip {
  position: absolute;
  z-index: 3;
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--surface);
  color: var(--accent);
  font-family: ui-monospace, monospace;
  font-size: 0.74rem;
  font-weight: 800;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.chip-python {
  top: 18%;
  left: 5%;
  transform: rotate(-8deg);
}

.chip-ioc {
  right: 6%;
  bottom: 23%;
  transform: rotate(8deg);
}

.visual-caption {
  position: absolute;
  bottom: 4%;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-family: ui-monospace, monospace;
  font-size: 0.58rem;
  letter-spacing: 0.12em;
}

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

.feature-section,
.labs-preview,
.week-section,
.timeline-section,
.approach-section,
.project-details,
.idea-section {
  padding: 90px 0;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 420px);
  align-items: end;
  gap: 60px;
  margin-bottom: 38px;
}

.section-heading > p,
.week-heading > div > p,
.approach-copy > p,
.feature-card p,
.step-card p,
.lab-card p:not(.micro-label),
.cta-panel p,
.schedule-note p,
.freedom-card > p:last-child,
.idea-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.section-heading.compact {
  grid-template-columns: 1fr;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card,
.lab-card,
.step-card,
.freedom-card,
.checklist-card,
.idea-grid article {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, var(--surface), transparent);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.03);
}

.feature-card {
  min-height: 280px;
  padding: 30px;
}

.feature-card::before,
.lab-card::before {
  position: absolute;
  top: 0;
  right: 18%;
  left: 18%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  content: "";
  opacity: 0.35;
}

.card-number {
  position: absolute;
  top: 20px;
  inset-inline-end: 24px;
  color: var(--muted);
  font-family: ui-monospace, monospace;
  font-size: 0.7rem;
}

.feature-icon,
.lab-icon {
  display: grid;
  width: 60px;
  height: 60px;
  margin-bottom: 34px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: var(--accent-soft);
  color: var(--accent);
  box-shadow:
    inset -8px -8px 18px rgba(0, 0, 0, 0.08),
    10px 12px 25px rgba(0, 0, 0, 0.1);
  transform: rotate(-3deg);
}

[dir="rtl"] .feature-icon,
[dir="rtl"] .lab-icon {
  transform: rotate(3deg);
}

.feature-icon .icon,
.lab-icon .icon {
  width: 30px;
}

.cta-section {
  padding: 65px 0 110px;
}

.cta-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 40px;
  overflow: hidden;
  padding: clamp(32px, 5vw, 62px);
  border: 1px solid var(--line-strong);
  border-radius: 24px;
  background:
    linear-gradient(110deg, var(--accent-soft), transparent 55%),
    var(--surface);
}

.cta-panel p {
  max-width: 650px;
}

.cta-decoration {
  position: absolute;
  inset-inline-end: 20%;
  opacity: 0.08;
  transform: scale(6);
}

.cta-decoration .icon {
  width: 50px;
}

.page-hero {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  align-items: center;
  min-height: 560px;
  gap: 8vw;
  padding: 90px 0 70px;
  border-bottom: 1px solid var(--line);
}

.page-hero.simple {
  grid-template-columns: 1fr auto;
  min-height: 460px;
}

.page-hero h1,
.instructor-copy h1,
.project-copy h1 {
  font-size: clamp(2.7rem, 5.2vw, 5.6rem);
}

.page-index {
  display: grid;
  color: transparent;
  font-family: ui-monospace, monospace;
  font-size: clamp(6rem, 16vw, 12rem);
  font-weight: 900;
  line-height: 0.8;
  -webkit-text-stroke: 1px var(--line-strong);
}

.page-index span {
  color: var(--muted);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-align: center;
  -webkit-text-stroke: 0;
}

.colab-visual {
  position: relative;
  min-height: 330px;
}

.cloud-platform {
  position: absolute;
  top: 0;
  inset-inline-end: 15%;
  display: grid;
  width: 150px;
  height: 150px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 32px;
  background: linear-gradient(145deg, var(--accent-soft), var(--surface-solid));
  color: var(--accent);
  box-shadow: var(--shadow);
  transform: rotate(7deg);
}

.cloud-platform .icon {
  width: 75px;
}

.code-window {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  max-width: 430px;
  padding: 15px 18px 25px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-solid);
  box-shadow: var(--shadow);
  transform: rotate(-3deg);
}

[dir="rtl"] .code-window {
  transform: rotate(3deg);
}

.window-bar {
  display: flex;
  gap: 6px;
  margin-bottom: 20px;
}

.window-bar i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--line-strong);
}

.code-window code {
  direction: ltr;
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 2.1;
  text-align: left;
}

.code-window b,
.code-window span {
  color: var(--accent);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.step-card {
  display: flex;
  gap: 20px;
  padding: 26px;
}

.step-card > span {
  color: var(--accent);
  font-family: ui-monospace, monospace;
  font-size: 0.72rem;
}

.info-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 15px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}

.info-strip .icon {
  flex: 0 0 auto;
  width: 22px;
}

.info-strip p {
  margin: 0;
  color: var(--text);
  font-size: 0.84rem;
}

.warning-strip {
  border-color: rgba(255, 188, 92, 0.35);
  background: rgba(255, 188, 92, 0.08);
  color: #ffbc5c;
}

.labs-notice-section {
  display: grid;
  gap: 12px;
  padding-top: 0;
}

.lab-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.lab-grid.two-column {
  grid-template-columns: repeat(2, 1fr);
}

.lab-card {
  display: flex;
  min-height: 440px;
  flex-direction: column;
  padding: 26px;
}

.lab-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.lab-icon {
  width: 54px;
  height: 54px;
  margin-bottom: 28px;
}

.lab-icon .icon {
  width: 27px;
}

.code-tag,
.micro-label {
  color: var(--accent);
  font-family: ui-monospace, monospace;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.code-tag {
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--muted);
}

.lab-card h3 {
  min-height: 2.4em;
}

.lab-meta {
  display: grid;
  gap: 9px;
  margin: 18px 0 0;
}

.lab-meta div {
  display: grid;
  grid-template-columns: minmax(85px, 0.7fr) 1.3fr;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.lab-meta dt {
  color: var(--muted);
  font-size: 0.69rem;
}

.lab-meta dd {
  margin: 0;
  font-size: 0.74rem;
  font-weight: 800;
}

.text-link,
.text-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
}

.text-link .icon,
.text-button .icon {
  width: 15px;
}

.lab-card-actions {
  position: static;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.lab-card-actions .colab-link {
  color: var(--accent-2);
}

.disabled-link {
  color: var(--muted) !important;
  cursor: not-allowed;
  opacity: 0.75;
}

.theory-section {
  padding-top: 20px;
}

.theory-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.theory-card {
  min-height: 285px;
  padding: 25px;
}

.theory-card h2 {
  font-size: 1.15rem;
}

.theory-card p {
  color: var(--muted);
  font-size: 0.84rem;
}

.theory-card .card-number {
  position: absolute;
  top: 22px;
  inset-inline-end: 22px;
}

.theory-cta {
  display: flex;
  justify-content: center;
  margin-top: 30px;
}

.week-section + .week-section {
  border-top: 1px solid var(--line);
}

.final-week-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  background:
    linear-gradient(110deg, var(--accent-soft), transparent 60%),
    var(--surface);
}

.final-week-card .feature-icon {
  margin: 0;
}

.final-week-card .eyebrow {
  margin-bottom: 10px;
}

.final-week-card h3 {
  margin-bottom: 7px;
  font-size: 1.35rem;
}

.final-week-card p:last-child {
  margin: 0;
  color: var(--muted);
}

.week-heading {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: start;
  max-width: 800px;
  margin-bottom: 38px;
}

.week-number {
  color: transparent;
  font-family: ui-monospace, monospace;
  font-size: 4.3rem;
  font-weight: 800;
  line-height: 1;
  -webkit-text-stroke: 1px var(--line-strong);
}

.timeline {
  max-width: 1020px;
  margin: 0 auto;
}

.timeline-row {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 24px;
}

.timeline-marker {
  position: relative;
  display: flex;
  justify-content: center;
}

.timeline-marker span {
  display: grid;
  z-index: 2;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--surface-solid);
  color: var(--accent);
  font-family: ui-monospace, monospace;
  font-size: 0.7rem;
}

.timeline-marker i {
  position: absolute;
  top: 44px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(var(--line-strong), var(--line));
}

.timeline-card {
  display: grid;
  grid-template-columns: 1.3fr 1fr 0.9fr;
  gap: 28px;
  margin-bottom: 28px;
  padding: 26px 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}

.timeline-title p,
.timeline-card div > span {
  margin-bottom: 5px;
  color: var(--accent);
  font-family: ui-monospace, monospace;
  font-size: 0.63rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline-card h2,
.timeline-card p {
  margin-bottom: 0;
  font-size: 1rem;
}

.timeline-card div:not(.timeline-title) p {
  color: var(--muted);
  font-size: 0.83rem;
}

.schedule-note {
  display: flex;
  max-width: 900px;
  gap: 20px;
  margin: 36px auto 0;
  padding: 25px;
  border-inline-start: 2px solid var(--accent);
  background: var(--accent-soft);
}

.schedule-note > span {
  display: grid;
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  place-items: center;
  color: var(--accent);
}

.schedule-note .icon {
  width: 32px;
}

.schedule-note h3 {
  margin-bottom: 6px;
}

.instructor-hero {
  display: grid;
  grid-template-columns: 0.75fr 1fr;
  align-items: center;
  min-height: 680px;
  gap: 9vw;
  padding: 90px 0;
}

.instructor-portrait {
  position: relative;
  display: grid;
  min-height: 430px;
  place-items: center;
}

.portrait-card {
  position: relative;
  display: grid;
  z-index: 2;
  width: min(330px, 78vw);
  aspect-ratio: 0.84;
  overflow: hidden;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 28px;
  background:
    radial-gradient(circle at 50% 40%, rgba(78, 230, 193, 0.2), transparent 32%),
    linear-gradient(145deg, var(--surface-raised), var(--bg-deep));
  box-shadow: var(--shadow);
  transform: rotate(-2deg);
}

[dir="rtl"] .portrait-card {
  transform: rotate(2deg);
}

.portrait-initials {
  z-index: 2;
  color: var(--accent);
  font-size: 5.2rem;
  font-weight: 900;
  letter-spacing: -0.08em;
  text-shadow: 0 0 35px var(--accent-soft);
}

.portrait-grid {
  position: absolute;
  inset: 0;
  opacity: 0.25;
  background-image:
    linear-gradient(var(--line-strong) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-strong) 1px, transparent 1px);
  background-size: 35px 35px;
  mask-image: linear-gradient(to top, black, transparent 80%);
}

.portrait-ring {
  position: absolute;
  width: 410px;
  height: 240px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transform: rotate(-22deg);
}

.verified-badge {
  position: absolute;
  right: 4%;
  bottom: 12%;
  z-index: 3;
  display: grid;
  width: 60px;
  height: 60px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  background: var(--surface-solid);
  color: var(--accent);
  box-shadow: var(--shadow);
}

.verified-badge .icon {
  width: 32px;
}

.instructor-copy h1 {
  margin-bottom: 10px;
}

.instructor-copy h2 {
  color: var(--accent);
  font-size: clamp(1.2rem, 2vw, 1.7rem);
}

.instructor-meta {
  display: flex;
  gap: 50px;
  margin: 32px 0;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.instructor-meta div {
  display: grid;
}

.instructor-meta dt {
  color: var(--muted);
  font-size: 0.7rem;
}

.instructor-meta dd {
  margin: 3px 0 0;
  font-weight: 800;
}

.certification-block {
  margin: -10px 0 28px;
}

.certification-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 10px;
}

.certification-list span {
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--text);
  font-family: ui-monospace, monospace;
  font-size: 0.72rem;
  font-weight: 800;
}

.approach-section {
  display: grid;
  grid-template-columns: 0.85fr 1fr;
  gap: 9vw;
  border-top: 1px solid var(--line);
}

.value-list {
  border-top: 1px solid var(--line);
}

.value-list div {
  display: grid;
  grid-template-columns: 40px 1fr 24px;
  align-items: center;
  gap: 15px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.value-list span {
  color: var(--accent);
  font-family: ui-monospace, monospace;
  font-size: 0.7rem;
}

.value-list p {
  margin: 0;
  font-weight: 700;
}

.value-list .icon {
  width: 20px;
  color: var(--muted);
}

[dir="rtl"] .value-list .icon {
  transform: scaleX(-1);
}

.project-hero {
  display: grid;
  grid-template-columns: 1fr 0.75fr;
  align-items: center;
  min-height: 620px;
  gap: 8vw;
  padding: 90px 0;
  border-bottom: 1px solid var(--line);
}

.project-cube {
  position: relative;
  display: grid;
  min-height: 390px;
  place-items: center;
}

.project-cube::before,
.project-cube::after {
  position: absolute;
  width: 340px;
  height: 340px;
  border: 1px solid var(--line);
  border-radius: 50%;
  content: "";
  transform: rotateX(65deg);
}

.project-cube::after {
  width: 270px;
  height: 270px;
  border-color: var(--line-strong);
  transform: rotateY(65deg);
}

.project-cube > div {
  display: grid;
  z-index: 2;
  width: 210px;
  height: 210px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 36px;
  background: linear-gradient(145deg, var(--accent-soft), var(--surface-solid));
  color: var(--accent);
  box-shadow: var(--shadow);
  transform: rotate(8deg);
}

.project-cube .icon {
  width: 120px;
  filter: drop-shadow(0 0 14px var(--accent-soft));
}

.project-cube > span {
  position: absolute;
  bottom: 8%;
  z-index: 3;
  color: var(--muted);
  font-family: ui-monospace, monospace;
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-align: center;
}

.project-details {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 18px;
}

.freedom-card,
.checklist-card {
  padding: clamp(28px, 4vw, 46px);
}

.checklist-card ul {
  display: grid;
  gap: 16px;
  margin: 25px 0 0;
  padding: 0;
  list-style: none;
}

.checklist-card li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--line);
}

.checklist-card li .icon {
  flex: 0 0 auto;
  width: 23px;
  color: var(--accent);
}

.idea-section {
  border-top: 1px solid var(--line);
}

.idea-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.idea-grid article {
  padding: 30px;
}

.idea-grid article > span {
  display: block;
  margin-bottom: 45px;
  color: var(--accent);
  font-family: ui-monospace, monospace;
  font-size: 0.7rem;
}

.idea-grid ul {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.idea-grid li {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 0.78rem;
}

.idea-grid li .icon {
  flex: 0 0 auto;
  width: 18px;
  color: var(--accent);
}

.access-page {
  display: grid;
  grid-template-columns: 0.75fr 1fr;
  align-items: center;
  min-height: calc(100vh - 78px);
  gap: clamp(35px, 8vw, 110px);
  padding: 70px 0;
}

.access-page-shell {
  background:
    radial-gradient(circle at 22% 45%, var(--brand-soft), transparent 24rem),
    radial-gradient(circle at 78% 35%, var(--accent-soft), transparent 26rem);
}

.access-card {
  position: relative;
  overflow: hidden;
  max-width: 650px;
  padding: clamp(30px, 5vw, 55px);
  border: 1px solid var(--line-strong);
  border-radius: 24px;
  background: linear-gradient(145deg, var(--surface-solid), var(--surface));
  box-shadow: var(--shadow);
}

.access-card::before {
  position: absolute;
  top: 0;
  right: 12%;
  left: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand), var(--accent), transparent);
  content: "";
}

.access-card h1 {
  margin-bottom: 18px;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
}

.access-icon {
  display: grid;
  width: 62px;
  height: 62px;
  margin-bottom: 32px;
  place-items: center;
  border: 1px solid rgba(47, 124, 244, 0.38);
  border-radius: 17px;
  background: var(--brand-soft);
  color: var(--brand);
}

.access-icon .icon {
  width: 31px;
}

.access-form {
  margin-top: 32px;
}

.access-form label,
.invite-card textarea {
  font-size: 0.78rem;
  font-weight: 750;
}

.access-form label {
  display: block;
  margin-bottom: 9px;
}

.access-input-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

.access-input-row input {
  min-width: 0;
  height: 52px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 11px;
  outline: none;
  background: var(--bg-deep);
  color: var(--text);
  font: 700 0.86rem ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.04em;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.access-input-row input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}

.access-input-row input[aria-invalid="true"] {
  border-color: #ff6b72;
}

.form-message {
  min-height: 1.5em;
  margin: 10px 0 0;
  font-size: 0.78rem;
  font-weight: 700;
}

.form-message.error {
  color: #ff7d83;
}

.form-message.success {
  color: var(--accent);
}

.security-note {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 0.72rem;
}

.security-note .icon {
  flex: 0 0 auto;
  width: 18px;
  color: var(--brand);
}

.access-visual {
  position: relative;
  display: grid;
  min-height: 420px;
  place-items: center;
}

.access-visual > span {
  display: grid;
  z-index: 2;
  width: 190px;
  height: 220px;
  place-items: center;
  border: 1px solid rgba(47, 124, 244, 0.4);
  clip-path: polygon(50% 0, 92% 18%, 84% 73%, 50% 100%, 16% 73%, 8% 18%);
  background: linear-gradient(145deg, var(--brand-soft), var(--surface-solid));
  color: var(--brand);
  filter: drop-shadow(0 30px 45px rgba(0, 0, 0, 0.28));
}

.access-visual .icon {
  width: 88px;
  filter: drop-shadow(0 0 18px var(--brand));
}

.access-orbit {
  position: absolute;
  width: 360px;
  height: 210px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transform: rotate(-18deg);
}

.access-granted-card {
  grid-column: 1 / -1;
  justify-self: center;
  text-align: center;
}

.access-granted-card .access-icon {
  margin-inline: auto;
}

.access-granted-card .eyebrow {
  justify-content: center;
}

.invite-page {
  min-height: calc(100vh - 78px);
  padding: 90px 0 110px;
}

.invite-heading {
  max-width: 760px;
  margin-bottom: 42px;
}

.invite-heading h1 {
  font-size: clamp(3rem, 6vw, 5.6rem);
}

.invite-card {
  padding: clamp(26px, 4vw, 46px);
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  background:
    linear-gradient(125deg, var(--brand-soft), transparent 45%),
    var(--surface);
  box-shadow: var(--shadow);
}

.invite-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 25px;
}

.invite-card-header h2 {
  margin-top: 7px;
}

.invite-icon {
  display: grid;
  width: 52px;
  height: 52px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(47, 124, 244, 0.35);
  border-radius: 14px;
  background: var(--brand-soft);
  color: var(--brand);
}

.invite-icon .icon {
  width: 26px;
}

.invite-card textarea {
  direction: inherit;
  width: 100%;
  min-height: 270px;
  resize: vertical;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  outline: none;
  background: var(--bg-deep);
  color: var(--text);
  line-height: 2;
}

.invite-card textarea:focus {
  border-color: var(--brand);
}

.invite-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 18px;
}

.admin-invite-form,
.project-submission-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  padding: clamp(26px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
}

.admin-invite-form {
  grid-template-columns: repeat(3, 1fr);
}

.form-field {
  display: grid;
  gap: 8px;
}

.form-field.full-width,
.submission-action.full-width,
.admin-invite-form .full-width {
  grid-column: 1 / -1;
}

.form-field label {
  font-size: 0.76rem;
  font-weight: 750;
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 11px;
  outline: none;
  background: var(--bg-deep);
  color: var(--text);
  font: inherit;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.form-field input,
.form-field select {
  height: 50px;
  padding: 0 14px;
}

.form-field textarea {
  min-height: 130px;
  resize: vertical;
  padding: 14px;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}

.admin-form-action,
.submission-action {
  display: flex;
  align-items: center;
  gap: 18px;
}

.admin-invite-result {
  margin-top: 22px;
}

.generated-code {
  direction: ltr;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: clamp(1.1rem, 3vw, 1.8rem);
  overflow-wrap: anywhere;
  text-align: start;
}

.submission-section {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: clamp(35px, 7vw, 90px);
  padding: 90px 0 110px;
  border-top: 1px solid var(--line);
}

.submission-heading > p:last-child {
  color: var(--muted);
}

button:disabled {
  cursor: wait;
  opacity: 0.65;
  transform: none;
}

.modal-open {
  overflow: hidden;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  overflow-y: auto;
  place-items: center;
  padding: 28px;
  background: rgba(1, 7, 13, 0.78);
  backdrop-filter: blur(14px);
}

.lab-modal {
  position: relative;
  width: min(720px, 100%);
  max-height: calc(100vh - 56px);
  overflow-y: auto;
  padding: clamp(28px, 5vw, 48px);
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  background: var(--surface-solid);
  box-shadow: var(--shadow);
}

.modal-close {
  position: absolute;
  top: 18px;
  inset-inline-end: 18px;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
}

.lab-modal-heading {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-inline-end: 45px;
}

.lab-modal-heading .lab-icon {
  flex: 0 0 auto;
  margin: 0;
}

.lab-modal-heading h2 {
  margin: 5px 0 0;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
}

.lab-modal-description {
  margin: 28px 0;
  color: var(--muted);
}

.lab-modal-objectives {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--accent-soft);
}

.lab-modal-objectives h3 {
  margin-bottom: 15px;
}

.lab-modal-objectives ul {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.lab-modal-objectives li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lab-modal-objectives .icon {
  width: 20px;
  flex: 0 0 auto;
  color: var(--accent);
}

.lab-resource-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 18px 0;
}

.resource-link {
  display: flex;
  align-items: center;
  gap: 13px;
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.resource-link > .icon {
  width: 25px;
  flex: 0 0 auto;
  color: var(--brand);
}

.resource-link span {
  display: grid;
  min-width: 0;
}

.resource-link small {
  overflow: hidden;
  color: var(--muted);
  font-family: ui-monospace, monospace;
  font-size: 0.65rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.modal-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 24px;
}

.placeholder-badge {
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--muted);
  font-family: ui-monospace, monospace;
  font-size: 0.62rem;
}

.site-footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  padding: 50px 4vw;
  border-top: 1px solid var(--line);
  background: var(--bg-deep);
}

.site-footer p {
  max-width: 520px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.footer-status {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-family: ui-monospace, monospace;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 1020px) {
  .desktop-nav {
    display: none;
  }

  .menu-button {
    display: grid;
  }

  .hero-grid,
  .page-hero,
  .instructor-hero,
  .project-hero {
    grid-template-columns: 1fr 0.78fr;
    gap: 4vw;
  }

  .hero-visual {
    min-height: 440px;
    transform: scale(0.88);
  }

  .lab-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 760px) {
  .site-header {
    min-height: 68px;
  }

  .mobile-menu {
    top: 68px;
  }

  .brand-mark {
    width: 37px;
    height: 37px;
  }

  .brand-copy small {
    display: none;
  }

  .section {
    width: min(100% - 32px, 620px);
  }

  .hero {
    padding: 62px 0 80px;
  }

  .hero-grid,
  .page-hero,
  .page-hero.simple,
  .instructor-hero,
  .project-hero,
  .access-page,
  .approach-section,
  .project-details {
    grid-template-columns: 1fr;
  }

  .access-page {
    padding: 55px 0 75px;
  }

  .access-visual {
    min-height: 270px;
    order: 2;
  }

  .access-visual > span {
    width: 130px;
    height: 155px;
  }

  .access-visual .icon {
    width: 58px;
  }

  .access-orbit {
    width: 270px;
    height: 150px;
  }

  .access-input-row {
    grid-template-columns: 1fr;
  }

  .access-input-row .button {
    width: 100%;
  }

  .hero-visual {
    min-height: 400px;
    margin-top: 20px;
    transform: scale(0.83);
  }

  h1 {
    font-size: clamp(2.7rem, 14vw, 4.5rem);
  }

  .hero-stats {
    justify-content: space-between;
    gap: 10px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .feature-grid,
  .theory-grid,
  .steps-grid,
  .idea-grid,
  .lab-grid,
  .lab-grid.two-column,
  .lab-resource-grid {
    grid-template-columns: 1fr;
  }

  .lab-card-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .lab-card {
    min-height: 455px;
  }

  .feature-card {
    min-height: 250px;
  }

  .theory-card {
    min-height: 240px;
  }

  .cta-panel {
    grid-template-columns: 1fr;
  }

  .cta-panel .button {
    justify-self: start;
  }

  .page-hero,
  .page-hero.simple {
    min-height: auto;
    padding: 75px 0;
  }

  .page-index {
    display: none;
  }

  .colab-visual {
    min-height: 310px;
    margin-top: 20px;
  }

  .week-heading {
    grid-template-columns: 70px 1fr;
  }

  .week-number {
    font-size: 3rem;
  }

  .timeline-row {
    grid-template-columns: 42px 1fr;
    gap: 10px;
  }

  .final-week-card {
    grid-template-columns: 1fr;
  }

  .final-week-card .button {
    justify-self: start;
  }

  .timeline-marker span {
    width: 38px;
    height: 38px;
  }

  .timeline-card {
    grid-template-columns: 1fr;
    gap: 17px;
    padding: 22px;
  }

  .instructor-hero {
    padding: 70px 0;
  }

  .instructor-portrait {
    order: 2;
  }

  .instructor-meta {
    gap: 25px;
  }

  .portrait-ring {
    width: 330px;
  }

  .project-cube {
    min-height: 350px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .invite-page {
    padding: 65px 0 85px;
  }

  .invite-actions,
  .modal-actions,
  .admin-form-action,
  .submission-action {
    align-items: flex-start;
    flex-direction: column;
  }

  .admin-invite-form,
  .project-submission-form,
  .submission-section {
    grid-template-columns: 1fr;
  }

  .submission-section {
    padding: 70px 0 90px;
  }

  .form-field.full-width,
  .submission-action.full-width,
  .admin-invite-form .full-width {
    grid-column: auto;
  }

  .modal-backdrop {
    align-items: end;
    padding: 12px;
  }

  .lab-modal {
    max-height: calc(100vh - 24px);
    border-radius: 20px;
  }

  .lab-modal-heading {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 410px) {
  .auth-button span {
    display: none;
  }

  .auth-button {
    width: 39px;
    padding: 0;
  }

  .hero-stats strong {
    font-size: 1.25rem;
  }

  .hero-stats span {
    font-size: 0.65rem;
  }

  .hero-visual {
    margin-inline: -40px;
    transform: scale(0.72);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .cyber-core {
    animation: float 5s ease-in-out infinite;
  }

  .orbit-one {
    animation: orbit 18s linear infinite;
  }

  .floating-chip {
    animation: chip-float 4s ease-in-out infinite alternate;
  }

  @keyframes float {
    0%,
    100% {
      transform: translateY(0) rotateY(-10deg) rotateX(4deg);
    }
    50% {
      transform: translateY(-14px) rotateY(-6deg) rotateX(1deg);
    }
  }

  @keyframes orbit {
    to {
      transform: rotateX(66deg) rotateZ(388deg);
    }
  }

  @keyframes chip-float {
    to {
      translate: 0 -10px;
    }
  }
}